GPS Measurements of Crustal Uplift near Jakobshavn Isbrae due to Glacial Ice Mass Loss
peer reviewed We analyze 2006–2009 data from four continuous Global Positioning System (GPS) receivers located between 5 and 150 km from the glacier Jakobshavn Isbræ, West Greenland. The GPS stations were established on bedrock to determine the vertical crustal motion due to the unloading of ice fro...
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Online Access: | https://orbilu.uni.lu/handle/10993/582 https://doi.org/10.1029/2010JB007490 |
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ftunivluxembourg:oai:orbilu.uni.lu:10993/582 2024-04-21T07:43:53+00:00 GPS Measurements of Crustal Uplift near Jakobshavn Isbrae due to Glacial Ice Mass Loss Khan, S. A. Liu, L. Wahr, J. Howat, I. Joughin, I. van Dam, Tonie Fleming, K. 2010 https://orbilu.uni.lu/handle/10993/582 https://doi.org/10.1029/2010JB007490 en eng American Geophysical Union (AGU) urn:issn:2156-2202 https://orbilu.uni.lu/handle/10993/582 info:hdl:10993/582 doi:10.1029/2010JB007490 scopus-id:2-s2.0-77957569784 wos:000282016000001 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Journal of Geophysical Research, 115, 13-16 (2010) Greenland Jakobshavn Isbrae climate change glacier dynamics Physical chemical mathematical & earth Sciences Physics Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2010 ftunivluxembourg https://doi.org/10.1029/2010JB007490 2024-03-27T14:10:06Z peer reviewed We analyze 2006–2009 data from four continuous Global Positioning System (GPS) receivers located between 5 and 150 km from the glacier Jakobshavn Isbræ, West Greenland. The GPS stations were established on bedrock to determine the vertical crustal motion due to the unloading of ice from Jakobshavn Isbræ. All stations experienced uplift, but the uplift rate at Kangia North, only 5 km from the glacier front, was about 10 mm yr−1 larger than the rate at Ilulissat, located only "45 km further away. This suggests that most of the uplift is due to the unloading of the Earth’s surface as Jakobshavn thins and loses mass. Our estimate of Jakobshavn’s contribution to uplift rates at Kangia North and Ilulissat are 14.6 ± 1.7 mm yr−1 and 4.9 ± 1.1 mm yr−1, respectively. The observed rates are consistent with a glacier thinning model based on repeat altimeter surveys from NASA’s Airborne Topographic Mapper (ATM), which shows that Jakobshavn lost mass at an average rate of 22 ± 2 km3 yr−1 between 2006 and 2009. At Kangia North and Ilulissat, the predicted uplift rates computed using thinning estimates from the ATM laser altimetry are 12.1 ± 0.9 mm yr−1 and 3.2 ± 0.3 mm yr−1, respectively. The observed rates are slightly larger than the predicted rates. The fact that the GPS uplift rates are much larger closer to Jakobshavn than further away, and are consistent with rates inferred using the ATM!based glacier thinning model, shows that GPS measurements of crustal motion are a potentially useful method for assessing ice!mass change models. Article in Journal/Newspaper Airborne Topographic Mapper glacier Greenland Ilulissat Jakobshavn Jakobshavn isbræ Kangia University of Luxembourg: ORBilu - Open Repository and Bibliography Journal of Geophysical Research: Solid Earth 115 B9 |
institution |
Open Polar |
collection |
University of Luxembourg: ORBilu - Open Repository and Bibliography |
op_collection_id |
ftunivluxembourg |
language |
English |
topic |
Greenland Jakobshavn Isbrae climate change glacier dynamics Physical chemical mathematical & earth Sciences Physics Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Greenland Jakobshavn Isbrae climate change glacier dynamics Physical chemical mathematical & earth Sciences Physics Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Khan, S. A. Liu, L. Wahr, J. Howat, I. Joughin, I. van Dam, Tonie Fleming, K. GPS Measurements of Crustal Uplift near Jakobshavn Isbrae due to Glacial Ice Mass Loss |
topic_facet |
Greenland Jakobshavn Isbrae climate change glacier dynamics Physical chemical mathematical & earth Sciences Physics Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed We analyze 2006–2009 data from four continuous Global Positioning System (GPS) receivers located between 5 and 150 km from the glacier Jakobshavn Isbræ, West Greenland. The GPS stations were established on bedrock to determine the vertical crustal motion due to the unloading of ice from Jakobshavn Isbræ. All stations experienced uplift, but the uplift rate at Kangia North, only 5 km from the glacier front, was about 10 mm yr−1 larger than the rate at Ilulissat, located only "45 km further away. This suggests that most of the uplift is due to the unloading of the Earth’s surface as Jakobshavn thins and loses mass. Our estimate of Jakobshavn’s contribution to uplift rates at Kangia North and Ilulissat are 14.6 ± 1.7 mm yr−1 and 4.9 ± 1.1 mm yr−1, respectively. The observed rates are consistent with a glacier thinning model based on repeat altimeter surveys from NASA’s Airborne Topographic Mapper (ATM), which shows that Jakobshavn lost mass at an average rate of 22 ± 2 km3 yr−1 between 2006 and 2009. At Kangia North and Ilulissat, the predicted uplift rates computed using thinning estimates from the ATM laser altimetry are 12.1 ± 0.9 mm yr−1 and 3.2 ± 0.3 mm yr−1, respectively. The observed rates are slightly larger than the predicted rates. The fact that the GPS uplift rates are much larger closer to Jakobshavn than further away, and are consistent with rates inferred using the ATM!based glacier thinning model, shows that GPS measurements of crustal motion are a potentially useful method for assessing ice!mass change models. |
format |
Article in Journal/Newspaper |
author |
Khan, S. A. Liu, L. Wahr, J. Howat, I. Joughin, I. van Dam, Tonie Fleming, K. |
author_facet |
Khan, S. A. Liu, L. Wahr, J. Howat, I. Joughin, I. van Dam, Tonie Fleming, K. |
author_sort |
Khan, S. A. |
title |
GPS Measurements of Crustal Uplift near Jakobshavn Isbrae due to Glacial Ice Mass Loss |
title_short |
GPS Measurements of Crustal Uplift near Jakobshavn Isbrae due to Glacial Ice Mass Loss |
title_full |
GPS Measurements of Crustal Uplift near Jakobshavn Isbrae due to Glacial Ice Mass Loss |
title_fullStr |
GPS Measurements of Crustal Uplift near Jakobshavn Isbrae due to Glacial Ice Mass Loss |
title_full_unstemmed |
GPS Measurements of Crustal Uplift near Jakobshavn Isbrae due to Glacial Ice Mass Loss |
title_sort |
gps measurements of crustal uplift near jakobshavn isbrae due to glacial ice mass loss |
publisher |
American Geophysical Union (AGU) |
publishDate |
2010 |
url |
https://orbilu.uni.lu/handle/10993/582 https://doi.org/10.1029/2010JB007490 |
genre |
Airborne Topographic Mapper glacier Greenland Ilulissat Jakobshavn Jakobshavn isbræ Kangia |
genre_facet |
Airborne Topographic Mapper glacier Greenland Ilulissat Jakobshavn Jakobshavn isbræ Kangia |
op_source |
Journal of Geophysical Research, 115, 13-16 (2010) |
op_relation |
urn:issn:2156-2202 https://orbilu.uni.lu/handle/10993/582 info:hdl:10993/582 doi:10.1029/2010JB007490 scopus-id:2-s2.0-77957569784 wos:000282016000001 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2010JB007490 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
115 |
container_issue |
B9 |
_version_ |
1796933912004395008 |